Oil-well pumping jack



\ March 11, 1930. R. B. NORRIS OIL WELL PUMPING JACK Filed April 5 1929 INVENTOR Patented Mar. 11, 1930 UNITED sum BATE oaries RUPERT BERNARD NORRIS, OFTULSA, OKLnno yrn, nssrorn'qn row. G.-.NQ'1RIS, .or

. (TULSA ooumYrqKLalimM LL-WELL R NG Jess Ap l cat o r l l Apr ,5

My inventionrelates to oil well pumping jacks and hasfor its objectto provide a straight lift on the polished rod.

With the above and other objects in View which willappear as the description proceeds, my invention consists in the novel feapumping elevation, showing portions of the pumping beam and standard, and the said apparatus.

standard represented Fig. 3 is an enlarged detailed view in front elevation of the apparatus as shown in Fig. 2.

Fig. 4 is an enlarged top plan view of said apparatus as shown in Fig. 2.

Fig. 5 is a view of the roller cam gudgeons integral with a spacing and holding member for the pumping beam, A being a front view and B a side view thereof.

1 represents generally the well, and 2 the polished rod attached in the usualmanner to a conventional pumping beam 3 made of channel irons suitably spaced and held, which point of attachment constitutes the weight bearing point of the pumping beam. The pumping beam 3 is mounted on a stationary generally by 4, which stationary standard is shown in the drawings in its conventional construction composed of two channel irons 5 suitably spaced and held in the usual manner. The stationary standard 4: is mounted on any suitable foundation such as a base 6 on which base is also mounted the pumping V or jack roper 7 with a pitman 8 connecting the V with the pumping beam 3. All of the above members are parts of and are arranged in the usual manner in the conventional type of pumping jack as aforesaid.

.tharo lerl amismeante obvious; that the cross arm s ntegr 1 the standard @1 91 h t t a l was an h l:- .poses h cam tmqkj aa sai 132 9. s ri no. 353,835.

9; represents an integralpartofsaid stationary standard 4,,the same beinga crossarm rigidly attached to the upright' ,pprtion o fzthestandardmnd in its preferred form asshown inlthe drawings consists ofdtw o channel 1r o11s:@1,0 arranged longitudinally of thefpumping beam 131 with the channels. facing] each other and spaced apart and hel tinlatliy su table. manner, such as :by bolts and 3 bar 11. Sand stationary standard {be con structed in any .other suitabl mamfllerpitq hold the pumping beam ,iil fll .apparati swhi h isthe sub ectmatteI Qfthelinvention. A n V 12. represents a link pivotally, attached. to the .standardA, the preferred construction placing ithe,pointof attachment on a c ross arm .as uishovwn. a d ntie ied in. y. sui l manner as y ho s' l ihavins emai ii x s-j any o he ui abl enstri ctien Re llttlng the; pumpi g bea t os late thrill its desired cou se may beiised- 'll 'lin ilfl.

is also pivotally connected to the pumping a .111 any suit bl manner. suchilasi y being mq te W01 2 .gl dge l 1 whi h gudgeon is shown as aflixed to or part of a memb 1.5 sed qsp eea -hold the h n iron. members. jf. hrrumpina beam .3. sai membe :1 b ing sim lar "to. 1 te ltmembr 210 the humping beam heated? be man the. piv s b ringe waterti h bearing paint of." pumping beam is a mllercam l6 t flxi whishl nsf itutes the iu rum p in ef! th tnamr a i ifi roller cam- 16 is mounted on nieipbe l7 on thestandard 4 is acam track or cam w h member, also. st ..asas am f r th chan el; irqnss th su mer;- @31 t 7011 .whichimemben lteresadseea rack themimhe o which l p i -di i gnl'th number "oficamsused 1in thefdrawirig'sJis .shgiwn a preferredconstructionpf acrQSS arm 1 compe ed o t ch nnel i n an n arrangemen he n e was 1 i i-lith "t r flange of the channel ironsfl Q cgiisti'ti ite the a rac and tha i t i i ensing When the weight is on the pumping beam the roller cam 16 engages the cam track 19 as the force is exerted upwardly on the cam. The flange 20 on the roller cam 16 assists in keepin the cam on its track. The sides or webs 0% the channels 10 and the lower flange of said channels, constitute further means of retaining the roller cam on the cam track.

It is evident that anumber of different constructions may be used in the arrangement of supports, links or levers, cams and cam tracks, and I do not desire to be limited to the particular construction shown.

The position of the axis of the link 12 with relation to-the axis of the cam 16 and to the weight bearing point of the pumping beam 3, and the length" of the link 12, are predetermined, so that the arc prescribed bythe connecting point of said link 12 and said pumping'beam 3 correlates with the arc prescribed by the weight bearing point of said pumping beam 3 to cause said point to move in a straight line thruout the course of its stroke. The link 12 restricts the movement of the pumping beam 3 and actuates it to a movement as above explained. a

In operation the pumping beam 3 is oscillated in the usual manner thru pitman 8. With the oscillation of the pumping beam, the link 12 works thru a predetermined are causing the pumping beam to move longitudinally on the roller cam 16, with the result that the fulcrum point of the pumping beam is changed thruout the course of the stroke,

fulcrum of said pumping beam; and means of retaining said roller cam on said cam track.

2. A pumping jack for pumping an oil well as claimed in claim 1; wherein said cam track consists of the inner surface of the upper flange of two channel irons rigidly attached to the upright portion of said stationary standard and suitably spaced and held parallel to each other with the channels facing each other; and wherein the aforesaid roller cam consists of two separate rollers suitably mounted on said pumping beam and having a common axis and rotatable thereon and working between the said channel irons and held therein.

In testimony whereof I afiix my signature.

R. BERNARD NORRIS.

causing the polished rod 2 to travel in a straight line.

Havin thus fully disclosed my invention, what I claim and desire to secure by Letters Patent is:

1. A pumping jack for pumping an oil well, comprising a pumping beam mounted on a stationary standard, means of oscillatin said beam and means of connecting a o ishedrodtosaidpumpingbeamatitsweight earing point; a stationary cam track on said stationary standard with the cam track longitudinally disposed with said pumping cam; a link pivotally connected to said stationary standard, and with said link also pivotally connected to said pumping beam, said link being of a predetermined length and having its axis at a predetermined point with 7 reference to the fulcrum point of said pumping beam to correlate the are prescribed by the point of its connection on the said pumping beam with the predetermined are prescribed by the weight bearing point of said pumping beam to cause the last named point to travel in a substantially straight line when said pumping beam is oscillated; a roller cam attached to said pumping beam at a point thereon between said link connection thereto and the weight bearing point thereof, and with said roller'cam engaging said cam track and free to move thereon and constituting the 

